import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.Table;

@Entity
@Table(name="simple")
public class Simple {
   @Id
   @GeneratedValue
   @Column(name="pId")
   private Long pId;
   
   @Column(name="pname")
   private String pname;
   
   @Column(name="page")
   private int page;

   public Long getpId() {
      return pId;
   }

   public void setpId(Long pId) {
      this.pId = pId;
   }

   public String getPname() {
      return pname;
   }

   public void setPname(String pname) {
      this.pname = pname;
   }

   public int getPage() {
      return page;
   }

   public void setPage(int page) {
      this.page = page;
   }
   
   

}

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0" xmlns="http://java.sun.com/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence
http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">
<persistence-unit name="ogm-jpa-tutorial" transaction-type="JTA">
<provider>org.hibernate.ogm.jpa.HibernateOgmPersistence</provider>
<class>org.hibernate.mgk.hbi.Simple</class>
<properties>
<property name="hibernate.ogm.datastore.provider" value="MongoDB"/>
<property name="hibernate.ogm.datastore.grid_dialect" value="org.hibernate.ogm.datastore.mongodb.MongoDBDialect"/>
<property name="hibernate.ogm.datastore.database" value="Mgk1"/>
<property name="hibernate.ogm.datastore.host" value="127.0.0.1"/>
<property name="hibernate.ogm.datastore.port" value="27017"/>
</properties>
</persistence-unit>
</persistence>

import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;

import org.hibernate.mgk.hbi.Simple;


public class MgkTest {

   public static void main(String[] args) throws Exception{
      Simple simple = new Simple();
      simple.setPname("zac");
      simple.setPage(26);
      
     EntityManagerFactory emf = Persistence.createEntityManagerFactory("ogm-jpa-tutorial" );
     System.out.println("persist is doing well");
     EntityManager em = emf.createEntityManager();
     
     javax.transaction.UserTransaction tx = com.arjuna.ats.jta.UserTransaction.userTransaction();
         {
   try {
      tx.begin();
      em.persist(simple);
       tx.commit();
      System.out.println("Persist successful ...");
      } catch (Exception re) {
      tx.rollback();
      System.out.println("Persist failed ...");
      throw re;
      } finally {
      if (em != null) {
      em.clear();
      em.close();
      }
      }
}
   }
}